V3: In situ cosmogenic dating of extraterrestrial surfaces

Our project is the design of a prototype of “spatializable” mass spectrometer and its preparation line dedicated to the analysis of all noble gases, in order to estimate, by in situ measure-ments, exposure ages of extraterrestrial samples (Mars, The Moon and asteroids). It is clear that only a small number (and mass) of samples will be returned to Earth, and therefore the careful choice of these samples, and the in situ analyses of a large number of samples will stay the better technic to answer to some simple but important scientific questions such as age surfaces, ages and frequency of impacts, or exposure duration by the solar wind.